Create a new hook commit_modeset_disables() consistent with the naming
in drm atomic helpers and similar to the commit_modeset_enables() hook.
This helps better organize the disable sequence in atomic_commit_tail()
and move that to this disable hook.

No functional change

Suggested-by: Daniel Vetter <daniel.vet...@intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Matt Roper <matthew.d.ro...@intel.com>
Cc: Jani Nikula <jani.nik...@intel.com>
Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 105 +++++++++++--------
 drivers/gpu/drm/i915/i915_drv.h              |   1 +
 2 files changed, 64 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
b/drivers/gpu/drm/i915/display/intel_display.c
index 71e86e2f0f90..c34118998ace 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -13613,6 +13613,58 @@ static void intel_update_crtc(struct drm_crtc *crtc,
        intel_finish_crtc_commit(to_intel_atomic_state(state), intel_crtc);
 }
 
+static void intel_commit_modeset_disables(struct drm_atomic_state *state)
+{
+       struct drm_device *dev = state->dev;
+       struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
+       struct drm_i915_private *dev_priv = to_i915(dev);
+       struct drm_crtc_state *old_crtc_state, *new_crtc_state;
+       struct intel_crtc_state *new_intel_crtc_state, *old_intel_crtc_state;
+       struct drm_crtc *crtc;
+       struct intel_crtc *intel_crtc;
+       int i;
+
+       for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, 
new_crtc_state, i) {
+               old_intel_crtc_state = to_intel_crtc_state(old_crtc_state);
+               new_intel_crtc_state = to_intel_crtc_state(new_crtc_state);
+               intel_crtc = to_intel_crtc(crtc);
+
+               if (!needs_modeset(new_crtc_state))
+                       continue;
+
+               intel_pre_plane_update(old_intel_crtc_state, 
new_intel_crtc_state);
+
+               if (old_crtc_state->active) {
+                       intel_crtc_disable_planes(intel_state, intel_crtc);
+
+                       /*
+                        * We need to disable pipe CRC before disabling the 
pipe,
+                        * or we race against vblank off.
+                        */
+                       intel_crtc_disable_pipe_crc(intel_crtc);
+
+                       dev_priv->display.crtc_disable(old_intel_crtc_state, 
state);
+                       intel_crtc->active = false;
+                       intel_fbc_disable(intel_crtc);
+                       intel_disable_shared_dpll(old_intel_crtc_state);
+
+                       /*
+                        * Underruns don't always raise interrupts,
+                        * so check manually.
+                        */
+                       intel_check_cpu_fifo_underruns(dev_priv);
+                       intel_check_pch_fifo_underruns(dev_priv);
+
+                       /* FIXME unify this for all platforms */
+                       if (!new_crtc_state->active &&
+                           !HAS_GMCH(dev_priv) &&
+                           dev_priv->display.initial_watermarks)
+                               
dev_priv->display.initial_watermarks(intel_state,
+                                                                    
new_intel_crtc_state);
+               }
+       }
+}
+
 static void intel_commit_modeset_enables(struct drm_atomic_state *state)
 {
        struct drm_crtc *crtc;
@@ -13769,7 +13821,7 @@ static void intel_atomic_commit_tail(struct 
drm_atomic_state *state)
        struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
        struct drm_i915_private *dev_priv = to_i915(dev);
        struct drm_crtc_state *old_crtc_state, *new_crtc_state;
-       struct intel_crtc_state *new_intel_crtc_state, *old_intel_crtc_state;
+       struct intel_crtc_state *new_intel_crtc_state;
        struct drm_crtc *crtc;
        struct intel_crtc *intel_crtc;
        u64 put_domains[I915_MAX_PIPES] = {};
@@ -13778,58 +13830,24 @@ static void intel_atomic_commit_tail(struct 
drm_atomic_state *state)
 
        intel_atomic_commit_fence_wait(intel_state);
 
-       drm_atomic_helper_wait_for_dependencies(state);
-
-       if (intel_state->modeset)
-               wakeref = intel_display_power_get(dev_priv, 
POWER_DOMAIN_MODESET);
-
        for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, 
new_crtc_state, i) {
-               old_intel_crtc_state = to_intel_crtc_state(old_crtc_state);
                new_intel_crtc_state = to_intel_crtc_state(new_crtc_state);
                intel_crtc = to_intel_crtc(crtc);
 
                if (needs_modeset(new_crtc_state) ||
-                   to_intel_crtc_state(new_crtc_state)->update_pipe) {
-
+                   new_intel_crtc_state->update_pipe) {
                        put_domains[intel_crtc->pipe] =
                                modeset_get_crtc_power_domains(crtc,
-                                       new_intel_crtc_state);
+                                                              
new_intel_crtc_state);
                }
+       }
 
-               if (!needs_modeset(new_crtc_state))
-                       continue;
-
-               intel_pre_plane_update(old_intel_crtc_state, 
new_intel_crtc_state);
-
-               if (old_crtc_state->active) {
-                       intel_crtc_disable_planes(intel_state, intel_crtc);
-
-                       /*
-                        * We need to disable pipe CRC before disabling the 
pipe,
-                        * or we race against vblank off.
-                        */
-                       intel_crtc_disable_pipe_crc(intel_crtc);
-
-                       dev_priv->display.crtc_disable(old_intel_crtc_state, 
state);
-                       intel_crtc->active = false;
-                       intel_fbc_disable(intel_crtc);
-                       intel_disable_shared_dpll(old_intel_crtc_state);
+       drm_atomic_helper_wait_for_dependencies(state);
 
-                       /*
-                        * Underruns don't always raise
-                        * interrupts, so check manually.
-                        */
-                       intel_check_cpu_fifo_underruns(dev_priv);
-                       intel_check_pch_fifo_underruns(dev_priv);
+       if (intel_state->modeset)
+               wakeref = intel_display_power_get(dev_priv, 
POWER_DOMAIN_MODESET);
 
-                       /* FIXME unify this for all platforms */
-                       if (!new_crtc_state->active &&
-                           !HAS_GMCH(dev_priv) &&
-                           dev_priv->display.initial_watermarks)
-                               
dev_priv->display.initial_watermarks(intel_state,
-                                                                    
new_intel_crtc_state);
-               }
-       }
+       dev_priv->display.commit_modeset_disables(state);
 
        /* FIXME: Eventually get rid of our intel_crtc->config pointer */
        for_each_new_crtc_in_state(state, crtc, new_crtc_state, i)
@@ -15722,6 +15740,9 @@ void intel_init_display_hooks(struct drm_i915_private 
*dev_priv)
                dev_priv->display.commit_modeset_enables = 
skl_commit_modeset_enables;
        else
                dev_priv->display.commit_modeset_enables = 
intel_commit_modeset_enables;
+
+       dev_priv->display.commit_modeset_disables = 
intel_commit_modeset_disables;
+
 }
 
 static i915_reg_t i915_vgacntrl_reg(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 075d7eb3c3f2..edb6b431f90c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -311,6 +311,7 @@ struct drm_i915_display_funcs {
        void (*crtc_disable)(struct intel_crtc_state *old_crtc_state,
                             struct drm_atomic_state *old_state);
        void (*commit_modeset_enables)(struct drm_atomic_state *state);
+       void (*commit_modeset_disables)(struct drm_atomic_state *state);
        void (*audio_codec_enable)(struct intel_encoder *encoder,
                                   const struct intel_crtc_state *crtc_state,
                                   const struct drm_connector_state 
*conn_state);
-- 
2.19.1

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